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      https://www.ias.ac.in/article/fulltext/jess/129/0043

    • Keywords

       

      Carbon dioxide exchange; Eddy covariance; India; Subtropical climate; Sesame; Reed canary grass.

    • Abstract

       

      Climate impacts agriculture in various complex ways at different levels and scales depending on the local natural crop growth limitations. Our objective in this study, therefore, is to understand how different is the atmosphere–biosphere exchange of $\rm{CO_{2}}$ under contrasting subtropical and boreal agricultural (an oilseed crop and a bioenergy crop, respectively) climates. The oilseed crop in subtropical climate continued to uptake $\rm{CO_{2}}$ from the atmosphere throughout the year, with maximum uptake occurring in the monsoon season, and drastically reduced uptake during drought. The boreal ecosystem, on the other hand, was a sustained, small source of $\rm{CO_{2}}$ to the atmosphere during the snow-covered winter season. Higher rates of $\rm{CO_{2}}$ uptake were observed owing to greater day-length in the growing season in the boreal ecosystem.The optimal temperature for photosynthesis by the subtropical ecosystem was close to the regional normal mean temperature. An enhanced photosynthetic response to the incident radiation was found for the boreal ecosystem implying the bioenergy crop to be more efficient than the oilseed crop in utilizing the available light. This comparison of the $\rm{CO_{2}}$ exchange patterns will help strategising the carbon management under different climatic conditions.

    • Author Affiliations

       

      PRAMIT KUMAR DEB BURMAN1 2 NARASINHA J SHURPALI3 SUBHARTHI CHOWDHURI4 ANANDAKUMAR KARIPOT2 SUPRIYO CHAKRABORTY1 2 SAARA E LIND3 PERTTI J MARTIKAINEN3 SEETHALA CHELLAPPAN5 ANTTI AROLA5 YOGESH K TIWARI1 P MURUGAVEL4 DINESH GURNULE4 KIRAN TODEKAR4 THARA V PRABHA4

      1. Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Pune 411 008, India.
      2. Department of Atmospheric and Space Sciences, Savitribai Phule Pune University, Pune 411 007, India.
      3. Department of Environmental and Biological Sciences, University of Eastern Finland, Yliopistonranta 1 E, P.O. Box 1627, 70211 Kuopio Campus, Finland.
      4. Cloud Aerosol Interaction and Precipitation Enhancement Experiment, Indian Institute of Tropical Meteorology, Pune 411 008, India.
      5. Finnish Meteorological Institute, P.O. Box 1627, 70211 Kuopio, Finland.
    • Dates

       
  • Journal of Earth System Science | News

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